ABC News? Jacqueline Klingebiel and Lindsey Ellerson report: Levi Johnston discloses exclusive details about life behind the scenes at the Palin household in an upcoming October issue of Vanity Fair, whichis set to hitstands today.

In the exclusive interview, Johnston, who fathered Bristol Palin?s baby, revealed that Alaska Governor Sarah Palin asked the young parents to keep their pregnancy a secret during her unsuccessful bid for the 2008 vice presidency.

?She told me that once Bristol had the baby she and Todd would adopt him. That way, she said, Bristol and I didn?t have to worry about anything,? Johnston wrote. ?Sarah kept mentioning this plan. She was nagging?she wouldn?t give up. ?

Johnston goes into great lengths describing the Palins' parenting style, sayingthey didn?t cook or clean and often household chores were left up to the children.

?The kids would do it all themselves: cook, clean, do the laundry, and get ready for school. Most of the time Bristol would help her youngest sister with her homework, and I?d barbecue chicken or steak on the grill,? said Johnston. ?Even before the campaign, Bristol was already the mom in the house, and she got tired of having to take care of her siblings.?

In a throw to the controversial exchange during the campaign betweenCBS?s Katie Couric and Palin about what publications the then-governor read habitually, Johnston also remarked that Palin only reads ?once in a blue moon.?

[I] ?actually never saw Sarah reading much at all?once in a blue moon, I?d see her reading a book, and I?ve never even seen her read a newspaper in my life. The Frontiersman and the Anchorage Daily News were always there in the morning, but the only one who looked through them was Todd.?

During the campaign and shortly after, Johnston told Vanity Fair that there was a lot of tension in the Palin?s relationship, often fighting and sleeping in separate rooms. Johnston disclosed there was also talk of divorce.

?They?re good on television, but once the cameras would leave they didn?t talk to each other,? Johnston said.

But it was after the elections that Johnston characterized life in the Palin household as rather dismal, saying the then-governor would walk ?around the house pouting.? When the McCain camp began accusing her of being the reason the Arizona senator lost the election, Palin would defensively remark, ?I brought everything to the table? and ?the majority of people were out there voting because of me!?

The aftermath of the election hit Palin hard, said Johnston, and ?she definitely thought she was running for president.?

Shortly after, Palin decided to step down from her role as governor of Alaska.Johnston told Vanity Fair Palin would blatantly say, ?I want to just take this money and quit being governor.?